Stove construction



Oct. 26 1926.

A. H. TINNERMAN STOVE CONSTRUCTION Filed July 5,

. l NI/EA/ZOP Patented 0a., 26, 1926.

ALBERT H. TINNERMAN, ,OF CLEVELAND, OHIO.

STOVE CONSTRUCTION.

' Application filed m 5,

This invention relates. to stoves and has for its general object the provision of a front frame construction ,for an oven of a gas range embodying features which are directed to preventing the destruction or damaging of the outer finish'of the oven frame consequent to the escape of hot gases from the oven door opening.

It is the custom of stove manufacturers to finish the exposed parts of a stove with vitreous enamel or with nickel to enhance the appearance and cleanliness of the stove, and a white enamel finish has proved to be the most popular color for gas ranges. white vitreous enamel finish, however, is more or less brittle and is subjected to discoloring and checking at all surface points where a concentration'of hot gases happens to occur. As an example of this, one of the principal difiiculties encountered by the manufacturer is the rapid destruction of that portion of the enamel finish which is immediately above the oven door due to the impinging hot gases upon these surfaces when the oven door is open or slightly ajar.

More specifically, therefore, the purpose of this invention is to provide an oven door and frame construction which will protect the enamel surfacing in the locationabove set forth by effectively guiding the hot gases away from this surfacing.

Other objects of my invention will hereinafter be set forth in the following description which refers to the accompanying drawings illustrating a preferred embodi-' ment thereof. The essential characteristics are summarized in the claims.

In the drawings Fig. 1 is a fragmentary perspective view of the top portion of a front frame member of an oven structure provided with my novel means for protecting the enameled surface thereof; Fig. 2 is an enlarged fragmentary cross-sectional view illustrating a preferred means forprotecting the enamel surface of the front frame-of the oven structure; Fig. 3 is a view similar to Fig. 2 showing the relation of the parts when the oven doo'r'fis closed; Fig. 4 is a fragmentary perspective view of a member adapted to extend through the door opening of the oven and serve as a hot gas guiding means to direct the hot gases away from the outer enameled surface of the oven frame. I

It is the practice to form the front of a 1924. I Serial No. 724,326.

stove, particularly, a gas range, of a single frame member comprising either a casting or a stamped or bent metal member, which constitutes a supporting medium for both the baking oven and broiler oven doors.

As shown in the drawings, I prefer to form the front .of the stove by the use of a cast frame member 10 which comprises a support for the oven door 11. Secured to this frame member aretop panels 12 carrying lining panels 13 and side panels.- The frame 10 is usually provided with a white vitreous enamel finish.- This finish is sub- A jected to a concentration of hot gases escaping from the oven, particularly when the door is in a slightly ajar position as shown in Fig. 2 with the result'that the finish on the transverse portion 10 of the frame rapidly checks and discolors, To prevent this discoloration, I disclosed'in my prior application, Serial No. 687,870 filed December 6, 1923, on a stove door and frame construe;

tion, a flange integrally formed on the front frame member to extend around the marginal edge of the door opening whereby the gases would be guided away from this surface. Such a frame construction required a special and accurate fitting of the door lining inorder to be properlyeifective.

In the present instance I direct the hot gases away from the surface to be protected, by the use of a member 14 somewhat in the shape of a bail and which is preferably mounted to pivot about bolts, 19 engaging lugs 20 extending inwardly from the frame member 10, adjacent the door opening thereof. The position of the pivot bolt 19 may be such that the member 14 may be in the nature of a movable flange adapted'to swing outwardly under the influence of gravity and may be swung inwardly by contacting with the door lining 15 when the door is being closed. A'fiange 22 isformed on the member 14 to extend along the top thereof and to serve. the purpose, first f preventing the member M from swingmg.

The top portion 14" of the member 14 may be slightly arcuate to present a uniform clearance to the edge of the frame as the member'l i is shifted inwardly and out- '5 wardly and may extend a suflicient distance outwardly through the oven door, as shown in- Fig. 2, to influence and guide'the hot escaping gases as indicated by the broken line arrows 30. The gases passing rapidly up- 10 ward cause a convective action in the zone 31 directly beneath the enameled surface which it is desired to protect, whereby cooling air current is drawn downwardly into the zone 31 to overcome the slight vacuum 1 caused by the escaping gases 30. The movement of the air currents is indicated by the full line arrows 32. This air movement has a tendency to maintain the enamel surface at a sufliciently lower temperature to prevent checking of the enamel while the concentration of the hot escaping gases is directed away from this surface. 4

vThe present arrangement gives the de-' 1. In a stove construction the combination of a door frame member, a door therefor, said frame being provided with a finished surface likely to be damaged by -hot gases, and movable means comprising a bafiie associated with the door opening and operated by the door for guiding hot gases escaping 40 from the door opening away from such finished surfaces. 2. In an oven construction a door frame having a door opening formed therein, a door mounted on the frame for closing said 4 opening and telescoping means associated with the perimeter of the door opening and operated b the door for guiding hot gases escaping t rough the doorway away from the outer exposed surface of the frame.

frame and a door supported thereby for 3. In an oven construction a front door having a movable flange comprising a baflle extending outwardly from the frame and adjacent the perimeter of the opening, 5 whereby the flange may be shifted inwardly when the door is closed.

4. In a stove construction the combination of a front frame member having exposed surfaces of enamel, said frame having a door opening formed therein, a door mounted on said frame'for closing the opening and a movable flange impervious to the passage of gas mounted on the frame and adapted to extend outwardly through the door opening when the door is open whereby hot gases escaping from the oven may be guided away from the exposed surfaces of the frame.

5. In a stove construction the combination of a frame member having an opening, a closure member therefor, said frame having a finish subject to damage by contact with hot gases, telescoping means operated by the closure member. and associated with the 'oienin for idin hot ases esca in v therethrough away from such finish surfaces.

6. In a stove construction the combination of a front frame member having an ovenl st door opening and an enameled surface extending across the top of the frame adjacent the door opening, an oven door mounted on the frame and a"swingable member providing a solid baflie extending through the door opening in the nature of a flangejtherefor, whereby, when the door is opened, the member may swing outwardly beyond the enameled surface of the frame.

7. In a stove construction the combination of a front oven frame member having a door opening, a door for closing the opening and a swingable member fianging the upper portion of the opening around the perimeter thereof in the nature of a pivotally mounted bail and ada ed to extend through the opening when t e door is opened, whereby hot gases escaping from the oven are guided away from the outer surface of the frame member.

In testimony whereof, I hereunto aflix my signature.

ALBERT H. TINNERMAN. 

